Golden Fluorite on Matrix | Wheal Mary Ann, Cornwall

A substantial natural pale blue-grey fluorite specimen from Wheal Mary Ann, Menheniot, Cornwall, displaying muted blue and grey crystalline sections, creamy-white mineral growth, translucent crystal faces and contrasting golden-brown mineral staining.

Weighing an impressive 670g, this Cornish mineral specimen features a chunky, irregular formation with intergrown crystalline areas, angular surfaces and contrasting textures. Its considerable weight, complex mineral structure and historic locality make it an appealing addition to a British mineral collection.

Specimen Description

This substantial specimen displays a beautiful combination of pale blue-grey, soft silvery blue, cloudy white, warm cream and earthy golden-brown, creating a naturally layered appearance across its rugged surface.

The specimen has a broad, irregular formation with a substantial crystalline body and several raised areas of mineral growth.

Its most distinctive feature is the distribution of muted blue-grey fluorite throughout the lighter surrounding matrix, producing contrasting patches of colour and transparency.

Across the principal face, numerous angular crystal surfaces intersect with smaller crystalline sections, creating a complex arrangement of natural geometric formations.

Some areas display a translucent, glass-like appearance, while others possess a more opaque, granular or softly frosted texture.

The pale blue-grey mineral sections are particularly attractive where they emerge from the surrounding creamy-white crystalline material.

Several broad crystal faces show subtle internal cloudiness, fine natural fractures and variations in transparency.

Along the upper portion, irregular mineral growth forms a slightly raised, uneven surface with a mixture of angular edges and smaller interlocking crystalline sections.

The specimen also contains scattered darker grey areas, adding depth to its otherwise pale colour palette.

Golden-brown and rusty-orange staining occurs across several surfaces, crystal boundaries and natural fractures.

These markings are consistent in appearance with iron-bearing mineral staining, although their precise chemical composition has not been independently established.

Viewed from the side, the specimen reveals a substantial thickness and a layered arrangement of crystalline material.

Several larger angular surfaces contrast with more fragmented and granular sections, highlighting the complexity of its natural formation.

The reverse displays additional creamy-white and pale grey crystalline growth, with irregular edges, mineral inclusions and natural surface textures.

From above, the specimen reveals a broad network of intersecting crystalline areas, with blue-grey mineral sections appearing between lighter, more opaque formations.

The combination of muted colours, rugged structure and contrasting crystalline textures gives this specimen a particularly distinctive appearance.

Unlike a polished crystal, this piece retains its natural geological character, including irregular edges, surface fractures, uneven mineral growth and areas of weathering.

Measuring 75.0mm × 58.2mm and weighing 670g, this is a substantial display specimen attributed to the historic Wheal Mary Ann locality in Cornwall.

About Fluorite

Fluorite (CaF₂) is a naturally occurring calcium fluoride mineral belonging to the halide mineral group.

It crystallises in the cubic, or isometric, crystal system and has a Mohs hardness of 4.

Fluorite is admired for its remarkable range of natural colours, including purple, blue, green, yellow, pink, brown and colourless varieties.

These colours can arise through structural defects, trace impurities and geological conditions during mineral formation.

Blue fluorite may range from delicate pale blue and blue-grey shades to deeper, more saturated blue and violet-blue tones.

Variations in colour and transparency can occur within a single specimen, particularly where multiple crystalline areas have developed under changing geological conditions.

Fluorite commonly forms within hydrothermal mineral veins, where heated, mineral-rich fluids circulate through fractures and cavities in surrounding rocks.

As these fluids cool or experience changes in pressure and chemical composition, dissolved minerals may crystallise within the available spaces.

Fluorite frequently occurs alongside quartz, calcite, baryte, galena, siderite and other minerals associated with hydrothermal deposits.

One of fluorite's defining physical characteristics is its perfect octahedral cleavage.

This allows the mineral to separate along particular crystallographic planes, producing distinctive angular surfaces.

Although fluorite commonly forms cubic crystals, natural cleavage and breakage can produce stepped, triangular and irregular geometric formations.

Fluorite typically possesses a vitreous, or glass-like, lustre, although weathering, fine crystalline growth and surface coatings can create a more frosted appearance.

Some fluorite specimens exhibit fluorescence under ultraviolet light, although this varies between individual specimens and localities.

Ultraviolet fluorescence has not been confirmed for this specimen.

Wheal Mary Ann & Cornish Mining Heritage

Wheal Mary Ann is a historic mineral locality situated near Menheniot in south-east Cornwall, England.

The Menheniot district forms part of Cornwall's extensive mining landscape and is particularly associated with historic lead and silver mining.

Although Cornwall is internationally recognised for its tin and copper deposits, the south-eastern region also contains important lead-bearing mineral veins.

During the nineteenth century, mining operations around Menheniot extracted lead ores, particularly galena, which could also contain economically valuable silver.

These mineral deposits developed through hydrothermal geological processes, with heated mineral-rich fluids circulating through fractures in the surrounding rocks.

Over time, these fluids deposited a varied assemblage of minerals, including quartz, fluorite, galena, siderite, calcite and other associated species.

Wheal Mary Ann is particularly interesting because historical geological investigations document complex relationships between successive generations of mineral deposition.

The British Geological Survey's geological memoir covering Plymouth and South-East Cornwall identifies fluorite as an important gangue mineral at Wheal Mary Ann.

Gangue minerals occur alongside economically valuable ores but are not necessarily the principal materials being extracted.

The geological memoir describes quartz as a significant vein-filling mineral, with chalcedonic material occurring along portions of the vein walls.

Crystalline quartz, galena and siderite are also documented within the mineral sequence.

Historical geological observations indicate that at least two generations of fluorite mineralisation occurred at Wheal Mary Ann.

This suggests that the mineral veins experienced multiple episodes of deposition under changing geological conditions.

Such processes can produce complex mineral associations, overlapping crystalline formations and variations in crystal development.

Fluorite from historic Cornish localities is particularly appealing to collectors interested in British mineralogy, geological history and Cornwall's industrial heritage.

This specimen offers a substantial example of fluorite attributed to Wheal Mary Ann, combining muted blue-grey colouration, pale crystalline matrix material and naturally occurring mineral staining.

Intention & Associated Chakras

Within traditional crystal healing practices, blue fluorite is associated with mental clarity, calm communication, focus and emotional balance.

Blue fluorite is commonly connected with peaceful expression, clear thinking and maintaining a balanced perspective.

Its soft blue colouration is traditionally associated with the Throat Chakra, symbolically representing communication, honesty and personal expression.

Fluorite as a mineral is also frequently associated with concentration, organisation and supporting a calm, balanced mindset.

• Peace & Calm: Traditionally associated with tranquillity, relaxation and emotional steadiness.
• Mental Clarity: Symbolically linked with clear thinking, understanding and mental organisation.
• Communication: Blue fluorite is traditionally connected with thoughtful expression and honest communication.
• Focus: Commonly associated with concentration, learning and maintaining perspective.
• Emotional Balance: Symbolically connected with calmness and maintaining emotional harmony.
• Personal Growth: Traditionally associated with self-awareness, understanding and positive change.

Primary Chakra: Throat Chakra.

Secondary Chakra: Third Eye Chakra.

Primary Intention: Mental clarity, communication and emotional balance.

These associations reflect traditional spiritual beliefs and are not scientifically established effects of fluorite.

Natural Formation & Symbolism

This specimen retains its natural crystalline structure, displaying a substantial irregular formation with overlapping angular surfaces, internal fractures and contrasting translucent and opaque areas.

Its broad, chunky silhouette gives it a strong visual presence, while the complex arrangement of mineral growth creates considerable detail across its surface.

The pale blue-grey crystalline sections contrast with creamy-white and champagne-coloured mineral material, producing a muted, naturally weathered appearance.

Several surfaces display fine natural markings, stepped crystalline boundaries and smaller intergrown formations.

Scattered golden-brown mineral staining highlights selected fractures and crystal boundaries, adding warmth to the cooler blue-grey tones.

Within traditional crystal symbolism, raw fluorite is associated with clarity, balance and maintaining a connection to the natural world.

Beyond these symbolic associations, this specimen's principal appeal lies in its substantial size, varied mineral textures, natural crystalline structure and connection to Cornwall's historic mineral-producing landscape.

Specimen Details

• Mineral: Fluorite on natural matrix
• Chemical Formula: CaF₂ (fluorite)
• Mineral Group: Halides
• Crystal System: Cubic (Isometric)
• Mohs Hardness: 4 (fluorite)
• Supplied Locality Attribution: Wheal Mary Ann
• Location: Menheniot, Cornwall, England
• Weight: 670g
• Dimensions: 75.0mm × 58.2mm
• Formation: Natural fluorite-bearing mineral specimen
• Colour: Pale blue-grey, silvery blue, creamy white, champagne, golden-brown and rusty-orange
• Features: Angular crystalline formations, translucent crystal faces, natural matrix, frosted mineral textures, surface fractures and mineral staining
• Shape: Raw
• Finish: Natural, unpolished
• Quantity: One individual specimen

You will receive the exact specimen photographed. Natural mineral specimens may display irregular edges, fractures, inclusions, uneven surfaces, mineral staining and delicate crystalline formations.

The wooden plinth and decorative flowers shown in the photographs are not included.

Sources & References

1. British Geological Survey – Plymouth and South-East Cornwall Area, Geological Memoir (Sheet 348). Geological documentation describing the Menheniot mineral veins, Wheal Mary Ann mineralisation and multiple generations of fluorite formation.
   British Geological Survey Geological Memoir
2. British Geological Survey – Silver, Mineral Resources Consultative Committee Mineral Dossier. Geological and historical information concerning the Menheniot lead-silver mining district.
   British Geological Survey Silver Mineral Dossier
3. Mindat – Wheal Mary Ann, Menheniot, Cornwall. Mineral locality database documenting fluorite and associated mineral species.
   Wheal Mary Ann Mineral Locality
4. University of Cambridge – Fluorite Mineral Collection. Mineralogical information concerning fluorite's chemical composition, crystal system, cleavage and physical properties.
   University of Cambridge Fluorite Collection
5. Henwood, W. J. (1871). Observations on Metalliferous Deposits: On the Lead Mines of Menheniot, Lanreath and Saint Pinnock. Transactions of the Royal Geological Society of Cornwall, Volume 8, pages 699–722.